UserEnv Returns Corrupted Profile for All Failures Including RSL Exceeded

When you log on to a Windows NT 4.0 computer, you may receive the following error in the User Environment dialog box:


The following message may be displayed as well:


Your profile settings (desktop icons, application settings, and so on) are reset to the default. If you look in the %SystemRoot%\Profiles folder, you should see your profile directory has been renamed to %SystemRoot%\Profiles\Username.bak, and a new default profile has been stored in %SystemRoot%\Profiles\Username. This is done to allow a user to log on successfully if the profile has been corrupted or does not load for some other reason.

If the registry size limit has been exceeded, a system pop-up message indicating this will be presented to the user during the first logon attempt when this occurs. The following message will be displayed:


During subsequent logon attempts, profile load errors will occur and the following application events will be logged:



NOTE: If a user commonly locks the workstation instead of logging off, the original Registry Size Limit error may have been forgotten or lost from the event log by the time a subsequent logon attempt occurs and the profile fails to load.

Windows 2000 Terminal Server SP4 clients are not able to connect to the Terminal Server because of the following error messages:

Although the user profile registry keys may fail to load for a number of reasons, one status code is always returned indicating that the profile is corrupted. The Registry Size Limit (RSL) may have been exceeded. The RSL is a user-defined quota that places a maximum upper limit on how large the registry can grow. When this limit is approached, a message stating this in the Application Popup dialog box will be presented to the user. Because the loading of a user profile (stored in Ntuser.dat) consumes Registry Quota, this may contribute to the exhaustion of this resource.

A User Profile does not load if the RSL has been exceeded. This is by design. To work around this problem, the RSL can be increased to avoid the restriction. To do this, follow these steps:

1. In Control Panel, double-click System.
2. On the Performance tab, click Change in the Virtual Memory section.
3. In the Virtual Memory dialog box, in the Registry Size section, the current registry size and the maximum registry size are displayed. Modify the current RSL in this section.

Microsoft recommends increasing the RSL only enough to accommodate the current Registry and a small amount of growth. For additional information, please see the following article in the Microsoft Knowledge Base:

In Windows NT 4.0, Terminal Server Edition, the RSL is based on paged pool. The maximum size of paged pool is 192 MB. RSL can consume a maximum of 80 percent of paged pool, for a maximum of 153.6 MB. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Windows NT 4.0

If the profile has been renamed to Username.bak as a result of the RSL being exceeded, it is possible to restore the original profile settings.

1. Log on to the computer as Administrator.
2. Rename or delete the %SystemRoot%\Profiles\Username profile folder.
3. Rename the %SystemRoot%\Profiles\Username.bak profile folder to Username.
4. Log off as Administrator and log on as Username.

Windows 2000

Windows 2000 includes a UserEnv enhancement so that the user profile is not deleted if or when the profile is not corrupt. A pop-up message is provided indicating insufficient resources. The user is then logged off if the user does not have local administrative privileges or the user is logged on when administrative privileges are identified. The administrator can then increase the registry size limit and log on again. The user profile used prior to the problem is still being saved on the local computer unless it has just been copied.

Note A restart is required after RSL has been increased either by using Control Panel or by editing the registry, because this change does not happen dynamically and you may still experience the following event:

Event Type: Error
Event Source: Userenv
Event Category: None
Event ID: 1000
Date: Date
Time: Time
User: NT AUTHORITY\SYSTEM
Computer: ComputerName
Description: RegLoadKey failed.
Return value: Insufficient system resources exist to complete the requested service for C:\Documents and Settings\ntuser.dat.

Windows 2000 Terminal Server SP4 clients

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1. Locate the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
2. Implement the following registry settings:
   PoolUsageMaximum=dword:00000030
   PagedPoolSize=dword:ffffffff
3. Restart the computer.

To try to reduce the size of the registry on Windows 2000 Professional-based computers that are affected:

1. Click Start, click Run, type ntbackup, and then click OK. Click Emergency Repair Disk.
2. When the following message comes up:
   Insert a blank, formatted floppy disk into drive A: and click Ok. Also backup the registry to the repair directory. This backup can be used to help recover your system if the registry is damaged. Ok
   
   
   When you click OK, you can disregard the following error message:
   The operation failed. The drive is not ready, or the diskette is not inserted properly.
3. Create a new Regback folder in c:\winnt\repair. Close Windows NT Backup, and then start the Registry Editor.
4. Click \HKEY_LOCAL_MACHINE, and then click Load Hive on the File menu.
5. Open the c:\winnt\repair\regback folder, click Software, and then click Open.
6. In the Key Name box, type software.good, and then click OK.
7. On the Registry menu, click Save Key.
8. Restart your computer with the Windows 2000 CD-ROM in your CD-ROM drive so you can so you can boot from the Windows 2000 CD.
9. Start the Recovery Console, and then type the following commands. Press ENTER after each command:
   cd\winnt\system32\config
   rename software Software.bad
   rename Software.good software
10. Restart your computer. For additional information about the Recovery Console, click the following article number to view the article in the Microsoft Knowledge Base:
    229716  (http://support.microsoft.com/kb/229716/ ) Description of the Windows 2000 Recovery Console

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Error code 1009 is always returned as the NtStatus code for the Windows API MyRegLoadkey. This code maps to the configuration registry database as corrupted: ERROR_BADDB or STATUS_REGISTRY_CORRUPT. This is misleading if the loading of the registry hive failed because of other causes. If the RSL is exceeded, the correct NtStatus code is 1450, insufficient system resources exist to complete the requested: ERROR_NO_SYSTEM_RESOURCES or STATUS_INSUFFICIENT_RESOURCES.

For additional information, please see the following article in the Microsoft Knowledge Base: